215000 has 40 divisors (see below), whose sum is σ = 515460. Its totient is φ = 84000.

The previous prime is 214993. The next prime is 215051. The reversal of 215000 is 512.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4979 + ... + 5021.

2²¹⁵⁰⁰⁰ is an apocalyptic number.

215000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257730).

215000 is an abundant number, since it is smaller than the sum of its proper divisors (300460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215000 is an equidigital number, since it uses as much as digits as its factorization.

215000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 8.

The square root of 215000 is about 463.6809247748. The cubic root of 215000 is about 59.9072641490.

Adding to 215000 its reverse (512), we get a palindrome (215512).

The spelling of 215000 in words is "two hundred fifteen thousand".